Preventing Bubbles in Long Lengths of Ag-Sheathed 2212 Tape

  • W. Zhang
  • E. E. Hellstrom
  • M. Polak
  • D. C. Larbalestier
Part of the Advances in Cryogenic Engineering Materials book series (ACRE, volume 42)


Bubbling is a key issue that limits the performance of Ag-sheathed Bi2Sr2CaCu2Ox (2212) tapes. Tapes that contained 2212 powder with 110 to 535 ppmw carbon were melt processed in 1 atm O2. Bubbling was eliminated by reducing the carbon content in the powder and adding an anneal step at 835°C prior to melting to the processing schedule. CO2 is removed from the tape during the 835°C annealing step.


Annealing Step Vacuum Annealing Processing Schedule Large Volume Fraction Apply Superconductivity 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    M. Yoshida, A. Endo and N. Hara, Jpn. J. Appl. Phys., 33:421(1994).CrossRefGoogle Scholar
  2. 2.
    H. Maeda, Y. Tanaka, M. Fukitomi and T. Asano, Jpn. J. Appl. Phys., 27:L209(1988).CrossRefGoogle Scholar
  3. 3.
    K. Togano, H. Kumakura, H. Kitaguchi, H. Maeda, J. Shimoyama, K. Nomura, and T. Hasegawa, Proceedings of the international workshop on superconductivity, co-sponsored by ISTEC and MRS, 1992,39.Google Scholar
  4. 4.
    W. Zhang and E.E. Hellstrom, Supercond. Sci. Technol., 8:430(1995).CrossRefGoogle Scholar
  5. 5.
    T. Haugan, S. Patel, M. Pitsakis, F. Wong, S.J. Chen and D.T. Shaw, submitted to J. Elec. Mat., 1995.Google Scholar
  6. 6.
    Th. Lang, D. Buhl, M. Cantoni and L.J. Gauckler, Proc.for European Conference on Applied Superconductivity, Edinburgh, Scotland, July 3–6, 1995.Google Scholar
  7. 7.
    Private communicationGoogle Scholar
  8. 8.
    E.E. Hellstrom and W. Zhang, Supercond. Sci. Technol, 8:317(1995).CrossRefGoogle Scholar
  9. 9.
    T. Hase, K. Shibutani, S. Hayashi, R. Ogawa and Y. Kawate, Cryogenics, 35:127(1995).CrossRefGoogle Scholar
  10. 10.
    S. Patek, T. Haugan, S. Chen, F. Wong, E. Narumi and D.T. Shaw, Cryogenics, 34:537(1994).CrossRefGoogle Scholar
  11. 11.
    L.O. El-Marizki, M. Polak and W. Zhang, Proceedings of the International Cryogenic Material Conference, 1995, Columbus, Ohio.Google Scholar
  12. 12.
    L.M. Heijnen, T.W. Kuijpers, J.A. Klostermann, High-Temp.-High Pressure, 20:305(1988).Google Scholar
  13. 13.
    W. Zhang and E.E. Hellstrom, Physica C, 234:137 (1994).CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 1996

Authors and Affiliations

  • W. Zhang
    • 1
  • E. E. Hellstrom
    • 1
    • 2
  • M. Polak
    • 3
  • D. C. Larbalestier
    • 1
    • 2
  1. 1.Applied Superconductivity CenterUniversity of Wisconsin-MadisonMadisonUSA
  2. 2.Department of Materials Science and EngineeringUniversity of Wisconsin-MadisonMadisonUSA
  3. 3.Institute of Electrical EngineeringSlovak Academy of ScienceBratislavaSlovak Republic

Personalised recommendations